I am sure the devs have seen Scoble's comment about FF taking over for Twitter: http://scobleizer.com/2008/04/21/twitter-grabbing-defeat-from-the-jaws-of-success/ . I know I would love it if plain comments on FF could be pushed to Twitter. That way I could use FF exclusively as my interface to my friends' content online. It also could help migrate more people to FF in those times when Twitter's servers go down.